found: Social Security death index, June 17, 2013(Beekman C. Cannon; born December 25, 1911, died October 19, 2004)

found: Yale bulletin & calendar, vol. 33, no. 9, October 29, 2004(Beekman Cannon; Beekman Cox Cannon; professor emeritus of music and former master of Jonathan Edwards College (1961-1974); died October 19, at age 92; born Hackensack, N.J., 1911; member of Yale faculty, 1939-1982; also a founder in 1975 of the Glimmerglass Opera, Cooperstown, N.Y.)